Here's some more:
Let's Active (84/85 Nassau Community College ?)
Ramones (? Stony Brook Gym)
Ramones (? Malibu Nite Club, Lido Beach)
Tom Tom Club (? Malibu Nite Club, Lido Beach)
Joan Jett (? 2 days at her home town bar, Island Park)
The Strawbs (79/80 My Father's Place, Roslyn)
Mike Oldfield (80/81 My Father's Place, Roslyn)
The Gunn Club (84 My Father's Place, Roslyn)
Bob Dylan (? Beacon Theater)
Warren Zevon (? Beacon Theater)
My Friend's Wamboozy Festival (95,96,97,98,99 at Lake Grove Farms; apple orchard in Modena; Snow Ridge Ski Area in Turin; John M's Estate in Bayshore)plus many, many cover bar bands from the mid 70's to 80's until MADD started to make noise and the clubs started to close.